Calculating machine



lly/lay 26, 1925.

G. WOLF 'CALCULATING MACHINE FilekiJuly 8, 1922 4 Sheets-Sheet 1 7%# Idro 0'@ may 26, 1925. 1,539,151

G. WOLF CALCULATING MACHINE Filed July 8, 1922 4 Sheets-Sheet 2 cv; :n I"

'' n 5gg/3915!( Inmo/9210;?

vmay 26, 1925.

G.- WOLF CALCULATING MACHINE Filed July 8, 1922 4 Sheets-Sheet 5 May 26,1925.'

. 1,539,151 G. WOLF CALCULATING MACHINE Filed July gr 1922 4 Sheets-Sheet. 4"

Patented May 26, 1925'.

UNITED STATES PATENT OFFICE.`

GEORG WOLF, 0E BERLIN, GERMANY, AssreNon ro 'rnEriRi/r: RING-WERKE, voRMALs GEERDER RING AKTIENGESELLSCHAFT, or NUREMBERG, GERMANY.

CALCULATING MACHINE.

Application led July 8, 1922. Serial No. 573,549.

To all whom zt-mag/ concer/n.:

Be it known that I, GEORG lVoLF, a. citi zen of Germany, residing at Berlin, Germany,l:1ave invented certain new and useul Lmprovements in Calculating Machines, kof which the following is a Vspecification.

.My invention has reference tofmeafns for effecting the displacement of the counting gear carriage in calculating machines and theilike in two oppositefdirections by means ofkeys, and for one or any number of digits. In the lprevious devices of this kind the carriage is displaced for one or several digitsby the depression of one or the tivo Shifting keys or sidekeys, and it has also been suggested already to arrange a center key for the purpose of shifting the carriage through any number of digits.

In view of these previous displacing and adjusting devices the present invention is particularly distinguishedby the fact that the ikey levers to be depressed are not provided with pawls or dogsk or are otherwise capable of individual movement of their own, but they aremade in one piece so as to ractically exclu-de failure of 'operation inst eusual coursefof working, it being one ofthe objects of my invention toemploy the least amount'possible of springs or of spring acting pawls, dogs or the like.

The invention will be more fully described with reference to the accompanying drawing-showing an embodiment thereof by way of example.

Figure l is a sectional view on the line CD of `Figure V3, the key levers being shown in the inoperative position.

Figure 2 is the same sectional view as Figure l, but with the right hand locking key depressed so as to disengage the carriage locking means.

'FigureB is a sectionon the line A-B of Figure'll, and i g Figure 4 is a planview of the carriage feeding means ofthe ,calculating machine.

Figures 5 to 7 illustratedetails of the device.

The locking yof the counting gear carriage a is leffected in this device by means of a rigid lever c (Figure 7) pivotally mounted cna' stu-d b in the frame of the machine at the outer end of which a roller 0l is provided which is adapted to be retained by a'tension spring e in the notches 'd' of a rack bar f secured to the counting gear carriage (Figure l). counting gear carriage (Figure 2), it becomes necessary to disengage :the roller d from the notches (l, which is effected by means of the rigid unlocking lever g which is adapted to be operated alternately by the side keys L and. R, Aand the central key l. The unlocking lever g .is pivoted on the stud and is provided at its end opposite the carriage with a ball shaped portion ,z' adapted to slide along the inclined surface lc of the lever c (Figures 3 and 7). The inclined face is so arranged that upon the depression of one of theside keys L or R the locking roller d is first disengaged without coming in Contact with the rack teeth a", and without `interfering with rthe displacement of the carriage whereupon, as soon as the vdisplacement of the carriage has been almost terminated, the roller drops back into the indentation and assists the displacement of the carriage.

The displacement of the carriage through several digits is effected by the depression of the central key Z which presses against the bar m of the disengaging lever g (Figure 6). By means of the ball c" 'the lever g raises the locking lever c, which causes the roller l to be disengaged, so that the carriage @may be easily displaced at will into any digit place desired.

rIn order to displace the counting gear carriage a only for one digit means are pro vided as follows To the frame of the machine a supporting bracket is secured in which the cog wheel or pin carrying wheel o is rotatably mounted which is provided at its outer and inner sides with 6 pins p and p respectively rigidly connected thereto on either side. Be low the pins p the key levers n and n (Figure 3) are mounted which are rotatable dn the shaft Q. If one of the side keys, for instance, R, is depressed, the unlocking lever g is rota-ted by means of the bar m by which means the roller d becomes dis* engaged from the notches d. Upon the further depression of the said key lever n', as shown in Figure 2, acts upon the pin p in the direction of the arrow, by which means 'the pin ywheel o is rotated, until the succeeding pin y) comes to abut against the side of the lever n, thereby exact-ly limiting the stroke thereof. The pins p on the If it is desired to displace the.

inner side of the pin wheel 0 during this partial rotation become engaged with the `grooves 7 ot' the rack bar thereby displacing the carriage t'or one digit in the direction oit the arrow (Figure 2). Upon releasing the key R the tensional spring s restores the key to its position of rest. At the same time the tensional spring e forces the roller (l into the nczt succeeding notch d (Figure 2) of the rack bar f, and the pin Wheel o is locked in its position ot rest by the cam Yfaced portion o't' the lever c (Figures l and 7), While the succeeding pin p is moved into the operative position above the key lever n. A

My invention is evidently not restricted to the particular coniguration and arrangement of parts as herein shown and described, but changes and alterations may occur Without deviating from the spirit of my invention as set forth in the claims hereunto annexed.

I claim l. Calculating machine comprising in combination, a machine bed, a carriage mounted on said bed ior lateral displacement, a ratchet Wheel mounted on said bed and gearing With said carriage and a rigid rockable key lever directly engageable with said Wheel, said key being arranged tor acting on one tooth of said ratchet Wheel tor rotating said Wheel and for acting on the next succeeding toot-h for locking said Wheel.

2. Calculating machine comprising in combination, a machine bed, a carriage mounted on said bed for lateral displacement, a ratchet Wheel mounted on said bed and gearing with said carriage, pins equidistantly mounted on said Wheel and a` rigid rockable key lever adapted to cooperate with said Wheel in displacing said carriage, tivo faces being formed on said lever at an angle to one another, one tace adapted to raise one pin so as to turn said Wheel and another tace adapted to form an abutment ior the next succeeding pin so as to stop said Wheel.

3. Calculating machine comprising in combination7 a machine bed, a carriage mounted on said bed for lateral displacement, a` ratchet Wheel mounted on said bed and gearing with said carriage, pins equidistantly mounted on either side of said Wheel and a rigid rockable key lever adapted to cooperate with said Wheel in displacing said carriage, tivo taces being formed on said lever at an angle to one another, one tace adapted to raise a pin on one side oit said Wheel so as to turn said wheel and another tace adapted to form an abutment for the next succeeding pin so as to stop said Wheel, the pins on the other side of said wheel being in operative engagement With said carriage.

4. Calculating' machine comprising in combination, a machine bed, a carriage mounted on said bed for lateral displacement, a ratchet wheel mounted on said bed and gearing with said carriage, pins equidistantly mounted on either side ot said wheel. and a rigid rockable key lever adapted to cooperate with said Wheel in displacing said carriage, two faces being formed on said lever at an angle to one another one tace adapted to raise a pinon one side of said Wheel, so as to turn said Wheel and another i'ace adapted to form an abutment for the next succeeding pin so as to stop said wheel and a rack on said carriage adapted to be engaged by the pins on the other side ot said Wheel.

Calculating' machine comprising in combination, a machine bed, a carriage mounted on said bed for late-ral displacement, a ratchet Wheel mounted on said bed and gearing with said carriage, pins equidistantly mounted on either side of said wheel and a rigid rockable key lever adapted to cooperate with said Wheel in displacing said carriage, tivo faces being formed on said lever at an angle to one another, one tace adapted to raise a pin on one side of said Wheel so as to turn said wheel and another face adapted to form an abutment for the next succeeding pin so as to stop said wheel, a double rack on said carriage having one row ot teeth adapted to be engaged by the pins on the other side of said Wheel and locking means engageable With the other roiv ot teeth ci' said rack.

(i. Calculating machine comprising in combination, a machine bed, a carriage mounted on said bed for lateral displacement, a ratchet Wheel mounted on said bed and gearing with said carriage, pins equidistantly mounted on either side oi said wheel and a rigid-rockable key lever adapted to cooperate with said wheel in displacing said carriage, tivo it'aces being formed on said lever at an angle to one another, one iace adapted to raise a pin on one side of said wheel so as to turn said Wheel and another :tace adapted to iorm an abutment for the next succeeding pin so as to stop said Wheel, a double rack on said carriage having one row of teeth adapted to be engaged by the pins on the other side of said Wheel, locking means engageable with the other row ot' teeth of said rack and a releasing lever adapted to act on said locking means so as to unlock said carriage.

7. Calculating machine comprising in combination, a machine bed, a carriage mounted on said bed .For lateral displacement, a ratchet Wheel mounted on said bed and gearing with said carriage, pins equidistantly mounted on either side of said Wheel and a rigid rockable key lever adapted to cooperate with said Wheel in displacing said carriage, two faces being formed on said lever at an angle to one another, one face adapted to raise a pin on one side of said Wheel so as to turn said Wheel and another face adapted to form an abutment for the next succeeding pin so as to stop said Wheel, a double rack on Said carriage having one row of teeth adapted to be engaged by the pins on the other side of said Wheel7 a locking lever engageable with one row of 10 teeth on said rack, a cam face on said locking lever and a releasing lever adapted to :1ct on said @am face so as to rock said locking level1 out of engagement with said rack and to thereby release said carriage.

In testimony whereof I my signature.

GEORG WOLF. 

